A5042489487- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Battery Technologies Research
- Advanced battery technologies research
- Thermal Expansion and Ionic Conductivity
- Electrochemical Analysis and Applications
- Supercapacitor Materials and Fabrication
- Molecular Junctions and Nanostructures
- Electrocatalysts for Energy Conversion
- Carbon Nanotubes in Composites
- Ammonia Synthesis and Nitrogen Reduction
- Graphene research and applications
- Electron and X-Ray Spectroscopy Techniques
- Electrochemical sensors and biosensors
- Advanced Thermoelectric Materials and Devices
- Inorganic Chemistry and Materials
- Ionic liquids properties and applications
- Analytical Chemistry and Sensors
- CO2 Reduction Techniques and Catalysts
- Solid-state spectroscopy and crystallography
- Gas Sensing Nanomaterials and Sensors
University of Chinese Academy of Sciences
2016-2024
Beijing National Laboratory for Molecular Sciences
2016-2024
Chinese Academy of Sciences
2016-2024
Cornell University
2020-2023
Institute of Chemistry
2016-2021
Center for Excellence in Education
2019
<italic>In situ</italic> monitoring of the interfacial processes in working all-solid-state lithium–sulfur batteries provides deep insights into degradation mechanisms and temperature dependence.
The key issue holding back the application of solid polymeric electrolytes in high-energy density lithium metal batteries is contradictory requirements high ion conductivity and mechanical stability. In this work, self-healable (SHSPEs) with rigid-flexible backbones are synthesized by a facile condensation polymerization approach. all-solid Li full based on SHSPEs possess freely bending flexibility stable cycling performance as result more disciplined plating/stripping, which have great...
Abstract The complex interplay and only partial understanding of the multi-step phase transitions reaction kinetics redox processes in lithium–sulfur batteries are main stumbling blocks that hinder advancement broad deployment this electrochemical energy storage system. To better understand these aspects, here we report operando confocal Raman microscopy measurements to investigate Li–S provide mechanistic insights into polysulfide generation/evolution sulfur deposition. Operando...
The polysulfide shuttle contributes to capacity loss in lithium-sulfur batteries, which limits their practical utilization. Materials that catalyze the complex redox reactions responsible for are emerging, but foundational knowledge enables catalyst development remains limited with only a small number of catalysts identified. Here, we employ rigorous electrochemical approach show quantitatively lithium reaction is catalyzed by nanoparticles high entropy sulfide material,...
Lithium-sulfur batteries possess favorable potential for energy-storage applications because of their high specific capacity and the low cost sulfur. Intensive understanding interfacial mechanism, especially polysulfide formation transformation under complex electrochemical environment, is crucial buildup advanced batteries. Here, we report direct visualization evolution dynamic sulfides mediated by lithium salts via real-time atomic force microscopy monitoring inside a working battery. The...
Lithium-sulfur (Li-S) batteries are highly appealing for large-scale energy storage. However, performance deterioration issues remain, which related to interfacial properties. Herein, we present a direct visualization of the structure and dynamics Li-S discharge/charge processes at nanoscale. In situ atomic force microscopy ex spectroscopic methods directly distinguish morphology growth insoluble products Li2 S2 S. The monitored show that nanoparticle nuclei begin grow 2 V followed by fast...
Chemical functionalization is a promising approach to controllably manipulate the characteristics of graphene. Here, we designed cis-dienes, featuring two dihydronaphthalene backbones, decorate graphene surface via Diels-Alder (DA) click reaction. The installation diene moiety into nonplanar molecular structure form cis-conformation enables rapid (∼5 min) DA reaction between and groups. Patterned sub-micrometer resolution can be obtained by easily soaking poly(methyl methacrylate)-masked in...
Abstract Sodium metal batteries have attracted rapidly rising attention due to their low cost and high energy densities. However, the instability efficiency of metallic sodium anodes pose significant concerns for practical applications. Here a highly stable anode enabled by an ether‐based electrolyte is reported, which exhibits long‐term cycling up 400 cycles achieves unprecedentedly average Coulombic over ≈99.93%. It revealed that organic/inorganic hybrid structure containing B–O species...
Lithium-sulfur batteries represent an attractive option for energy storage applications. A deeper understanding of the multistep lithium-sulfur reactions and electrocatalytic mechanisms are required to develop advanced, high-performance batteries. We have systematically investigated redox processes catalyzed by a cobalt single-atom electrocatalyst (Co-SAs/NC) via operando confocal Raman microscopy x-ray absorption spectroscopy (XAS). The real-time observations, based on potentiostatic...
In situ analysis of Li plating/stripping processes and evolution solid electrolyte interphase (SEI) are critical for optimizing all-solid-state metal batteries (ASSLMB). However, the buried solid-solid interfaces present a challenge detection which preclude employment multiple techniques. Herein, by employing complementary in characterizations, morphological/chemical evolution, dynamics SEI were directly detected. As mixed ionic-electronic conducting interface, Li|Li
Understanding catalytic mechanisms at the nanoscale is essential for advancement of lithium–oxygen (Li–O2) batteries. Using in situ electrochemical atomic force microscopy, we explored interfacial evolution during Li–O2 reactions dimethyl sulfoxide-based electrolyte, further revealing surface mechanism soluble catalyst 2,5-di-tert-butyl-1,4-benzoquinone (DBBQ). The real-time views showed that discharge flower-like Li2O2 formed electrolyte with DBBQ but small toroid without DBBQ. Upon charge,...
Lithium-carbon dioxide (Li-CO2 ) battery technology presents a promising opportunity for carbon capture and energy storage. Despite tremendous efforts in Li-CO2 batteries, the complex electrode/electrolyte/CO2 triple-phase interfacial processes remain poorly understood, particular at nanoscale. Here, using situ atomic force microscopy laser confocal microscopy-differential interference contrast microscopy, we directly observed CO2 conversion batteries nanoscale, further revealed laser-tuned...
The growing demands for high-energy density electrical energy storage devices stimulate the coupling of conversion-type cathodes and lithium (Li) metal anodes. While promising, use these "Li-free" brings new challenges to Li anode interface, as needs be dissolved first during cell operation. In this study, we have achieved a direct visualization comprehensive analysis dynamic evolution interface. critical metrics interfacial resistance, growth, solid electrolyte interface (SEI) distribution...
Abstract Lithium–sulfur (Li–S) batteries have been attracting wide attention for their promising high specific capacity. A deep understanding of Li–S interfacial mechanism including the temperature (T) effect is required to meet demands battery modification and systematic study. Herein, behavior during discharge/charge investigated at (HT) 60 °C in an electrolyte based on lithium bis(fluorosulfonyl) imide (LiFSI). By situ atomic force microscopy (AFM), dynamic evolution insoluble Li 2 S...
Zn-air batteries (ZABs) present high energy density and safety but suffer from low oxygen reaction reversibility dendrite growth at Zn electrode in alkaline electrolytes. Non-alkaline electrolytes have been considered recently for improving the interfacial processes ZABs. However, dynamic evolution mechanisms regulated by both positive negative electrodes remain elusive. Herein, using situ atomic force microscopy, we disclose that thin ZnO
Abstract A fundamental understanding of the remarkable impact water on interfacial processes lithium–oxygen (Li–O 2 ) reactions is great significance for practical application Li–O batteries. However, clarifying growth pathway and surface dynamics active products regulated by at nanoscale still a preliminary stage. Here, evolution cathode mediated in batteries successfully revealed using situ atomic force microscopy. Under regulation additive water, morphology discharge product Li O changed...